[GEN-2181]: enhance samplers input-validation with isEmpty function

[BenElferink]

This pull request introduces the isEmpty utility function and integrates it across various components to improve the handling of empty values. The most important changes include the addition of the isEmpty function, its use in form validation, and updates to the ErrorSampler and ProbabilisticSampler components to handle empty values more effectively.

Introduction of isEmpty utility function:

• frontend/webapp/utils/functions/resolvers/is-emtpy/index.ts: Added a new isEmpty function to strictly check for empty values, allowing values like 0 and false.
• frontend/webapp/utils/functions/resolvers/index.ts: Exported the new isEmpty function.

Integration of isEmpty in form components:

• frontend/webapp/containers/main/actions/action-form-body/custom-fields/error-sampler.tsx: Updated to use isEmpty for checking empty values and added useEffect to handle initial empty state. [1] [2]
• frontend/webapp/containers/main/actions/action-form-body/custom-fields/probabilistic-sampler.tsx: Updated to use isEmpty for checking empty values and added useEffect to handle initial empty state. [1] [2]

Form validation improvements:

• frontend/webapp/hooks/actions/useActionFormData.ts: Integrated isEmpty for form validation and added a console log for debugging. [1] [2] [3]

Updates to reusable components:

• frontend/webapp/reuseable-components/input-table/index.tsx: Used isEmpty to filter valid rows and handle empty values in the InputTable component. [1] [2] [3]

[notion-workspace]

Support 0 in fallback input (latency action) - (JLL 7/1/2025)